Concrete expansion joints are used to separate slabs and concrete from other parts of the structure.
Polished concrete floor expansion joints.
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Concrete is rigid in structure much like glass it does not bend or stretch without cracking.
Filling in expansion joints in polished and stained concrete floors provides an easier to clean surface and a smooth and finished joint where debris or dirt could gather.
When used in conjunction with polished concrete joint filler is ground and polished smooth to provide a seamless floor that is not only protected but easier to clean.
Un bonded concrete screeds should be a minimum thickness of 75mm.
Joint spacing that is greater than 15 feet require the use of load transfer devices dowels or diamond plates.
Early entry saws make a nice clean cut for decorative concrete joints.
For uniformity all rooms should be poured together and partition walls installed after the concrete is polished.
While in theory you can cut an expansion joint in concrete at any time it s better if this is a planned task.
Joint fillers also provide maintenance and aesthetics benefits by creating a sealed uniform surface free of open voids.
For tips on this check out bob harris s video or get a copy of his guide to stamped concrete joints are covered in chapter 23.
Concrete s high compressive strength and hardness make the concrete useful for flooring applications in many industries.
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Spec sheet on pouring concrete suitable for polishing concrete must be laid extremely well and flat.
Joint spacing in feet contraction joints may be tooled into the concrete surface at the time of placement.
Joints are commonly spaced at distances equal to 24 to 30 times the slab thickness.
Make sure concrete is floated up to the edge of the wall.
Note that flexible expansion joint filler does not protect the edge of the slab from damage.
As the name implies the expansion joint is a straight line groove cut into the surface of the concrete floor using a concrete saw.
These are the joints that we come across most often in warehouses and industrial buildings.
An expansion joint is a joint left completely free of mortar and filled with elastomeric sealant to keep it watertight.
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Saw cut contraction joints are ideal for decorative concrete because the joint is narrower and cleaner than a tooled joint.
Polished concrete floors in melbourne for homes factories commercial properties.
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Epoxy or polurea fillers are used to protect the exposed joint edges from impact and spalling by allowing load transfer across the joint.
Joint spacing in meters.